iirc, around the advent of agriculture, the average agriculturalist was significantly worse off than the average hunter-gatherer. They suffered from more malnutrition/nutritional deficiencies, had stunted growth, showed various signs of enduring backbreaking labor, and died younger if they lived past childhood. But the rate at which agriculturalist women got pregnant was 0.1% greater than that of hunter gatherer women, so.... here we are.